共查询到20条相似文献，搜索用时 734 毫秒
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复方软骨素片中乌头碱限量检查方法的探讨 总被引：4，自引：0，他引：4
目的:探讨检查复方软骨素片中乌头碱限量的方法.方法:采用薄层色谱法检查,用碱性氧化铝薄层板,以正己烷-醋酸乙酯(1:1)为展开剂,将碘化钾试碘液与碘化铋钾试液等容混合液为显色剂.结果:采用薄层色谱法可以对复方软骨素中的乌头碱限量进行检查.结论:薄层色谱法简单、方便,可用于复方软骨素片的质量控制. 相似文献
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冷哮丸临床加减方颗粒中麻黄和甘草薄层色谱鉴别的研究 总被引：3，自引：0，他引：3
目的研究该颗粒剂中麻黄和甘草薄层色谱鉴别的方法。方法麻黄的鉴别:硅胶G薄层板,氯仿-甲醇-氨试液(9∶4∶0.20)为展开剂,茚三酮试液为显色剂;甘草酸的鉴别:硅胶GF254(不活化),正丁醇-浓氨试液-水-乙醇(13∶1∶4∶2)为展开剂,紫外灯(254 nm)下检视;甘草次酸的鉴别:硅胶G薄层板,石油醚-苯-乙酸乙酯-冰乙酸(10∶22∶6∶0.45)为展开剂,喷以10%磷钼酸乙醇液。结果与结论本文所提供的方法专属性强,可用于冷哮丸的质量控制。 相似文献
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薄层扫描法测定利咽颗粒中苦参碱的含量 总被引：1，自引：0，他引：1
目的:用薄层扫描法测定利咽颗粒剂中苦参碱的含量。方法:采用TLC色谱,以环己烷-醋酸乙酯-丙酮-浓氨试液(4∶6∶8∶0.5)为展开剂,在硅胶G薄层板上分离苦参碱,以碘化铋钾试液为显色剂,采用双波长反射锯齿扫描测定其含量,λS=530nm,λR=620nm。结果:苦参碱在1.15~9.20μg范围内呈线性关系,回归方程Y=130868.5X 1854.99,r=0.9992。加样回收率为100.11%,RSD为4.42%。结论:本方法简便、准确、重现性好,可用作该制剂的定量分析方法。 相似文献
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目的建立薄层荧光扫描法测定三黄片中盐酸小檗碱的含量。方法以盐酸-乙醇(1∶100)为提取溶剂,按薄层色谱法用硅胶G预制薄层板,苯-乙酸乙酯-异丙醇-甲醇-水(6∶3∶1.5∶15∶0.3)为展开剂,展距4 cm,扫描激发波长:366 nm。结果盐酸小檗碱在0.0173-0.1214μg范围内具有良好的线性关系,回归方程:Y=8.61X×104+1×102,r=0.9999,平均回收率为101.8%,RSD=2.7(8n=6)。结论该方法结果准确,重现性好,可用于三黄片中盐酸小檗碱的含量测定。 相似文献
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目的:建立18F-氟脱氧葡萄糖(18F-FDG)注射液的硅胶薄层色谱(TLC)分析方法。方法:采用TLC分析方法,其中供试品溶液分别为18F-FDG注射液(A)和18F-FDG注射液-无水乙腈(5∶95,V/V)混和溶液(B),固定相为GF型和G型硅胶TLC板,流动相为乙腈-水(95∶5,V/V)。结果:当供试品溶液为A时主峰Rf值波动较大;为B时主峰Rf为0.38~0.40,放化含量均大于98%,放射性杂质18F-离子和副产物18F-氟脱氧甘露糖的Rf分别为0.0和0.78。结论:当供试品溶液为B时,硅胶TLC分析方法稳定、重现性好,其结果与《美国药典》基本相符,且与所用硅胶板种类无关。 相似文献
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纵观医药营销的发展脉络,相继出现过＂产品为王＂、＂利润为王＂、＂医生为王＂、＂渠道为王＂、＂品牌为王＂和＂终端为王＂等理论,但是随着新医改的推进,＂招标＂、＂配送＂、＂物价＂、＂目录＂,成为医药营销的先决条件。在新医改背景之下,2009年医药营销已进入＂政府关系为王＂的时代。所以理解政策与把握市场成为各企业的头等大事。 相似文献
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目的 探讨男性会阴部手术后伤口暴露疗法的可行性.方法 选择450例男性会阴部手术患者,其中250例术后伤口采用暴露疗法,200例术后伤口采用传统包扎疗法,术后观察伤口细菌感染和愈合情况,统计出伤口甲级愈合率,伤口细菌感染率,采用x2检验,用SPSS 17.0统计软件计算.结果 伤口甲级愈合率暴露疗法组为92.8%,明显高于包扎疗法组的91.5%（x2=12.2,P〈0.01）.伤口细菌感染率暴露疗法组和包扎疗法组相近（x2=0.06,P〉0.05）.结论 男性会阴部手术后伤口采用暴露疗法不会增加伤口细菌感染率,且伤口甲级愈合率明显提高. 相似文献
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目的 探讨男性会阴部手术后伤口暴露疗法的可行性.方法 选择450例男性会阴部手术患者,其中250例术后伤口采用暴露疗法,200例术后伤口采用传统包扎疗法,术后观察伤口细菌感染和愈合情况,统计出伤口甲级愈合率,伤口细菌感染率,采用x2检验,用SPSS 17.0统计软件计算.结果 伤口甲级愈合率暴露疗法组为92.8%,明显高于包扎疗法组的91.5%(x2=12.2,P<0.01).伤口细菌感染率暴露疗法组和包扎疗法组相近(x2=0.06,P>0.05).结论 男性会阴部手术后伤口采用暴露疗法不会增加伤口细菌感染率,且伤口甲级愈合率明显提高. 相似文献
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The concept that oestrogen replacement therapy is cardioprotective has been challenged recently by the negative results of randomized clinical trials in coronary heart disease. These data have come at a time of rapid advances in our understanding of the cellular mechanisms of oestrogen. In particular, the cloning of the classical oestrogen receptor (ERalpha), the identification of a novel ER isoform (ERbeta), the availability of specific ERalpha and ERbeta knockout mice models, and the elucidation of receptor functions and signalling pathways linked to non-genomic actions of oestrogen are helping to unravel this complex biology. In this article, these advances will be discussed with particular emphasis on the regulation of nitric oxide synthesis by oestrogen. Furthermore, the puzzling issues that have emerged and the potential for development of novel and specific therapeutic approaches will be highlighted. 相似文献
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On the action of bombesin on the kidney of the rat and the dog 总被引：1，自引：0，他引：1
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Eric Wenzler Kristen L. Bunnell Larry H. Danziger 《International journal of antimicrobial agents》2018,51(5):700-706
Background
There is a need to identify practice patterns of polymyxin use, quantify gaps in knowledge, and recognize areas of persistent confusion.Methods
A structured electronic survey was distributed to physicians, pharmacists and microbiologists. Demographic information was obtained, along with data regarding availability, stewardship principles, therapeutic usage, dosing, microbiological testing, and knowledge, attitudes and beliefs regarding the polymyxins.Results
In total, there were 420 respondents with a median of 8 (interquartile range 4–15) years of experience in infectious diseases (52.5%) and critical care (35%). Of the respondents who reported that only one polymyxin was available for use, 17.1% used polymyxin B. Over half (52.5%) of the respondents utilized a loading dose very often/always, and 66.8% dosed both polymyxins in milligrams, with the most common doses of colistin and polymyxin B being 2.5?mg/kg twice daily (60.3%) and 1.5?mg/kg twice daily (65%), respectively, for patients with normal renal function. Polymyxins were most often used for respiratory infections (63%) in combination with a carbapenem (63.6%). Approximately 85% of respondents reported their knowledge level to be fair, good or very good, although 34.9% answered two of the three knowledge questions incorrectly. More than 70% of respondents agreed that confusion exists in all surveyed areas of polymyxin use. Almost all respondents (91.2%) agreed that a polymyxin guideline would be a helpful resource.Conclusions
This survey revealed objective and subjective variability in the use and perception of the polymyxins, and identified several areas in which they were being used contrary to the available evidence. The information provided herein lays the framework to harmonize clinical practice, guide future research and shape consensus guidelines. 相似文献19.
